Bladder
Nonurothelial benign tumors
Postoperative granulomas




Topic Completed: 1 December 2014

Revised: 20 December 2018

Copyright: (c) 2003-2018, PathologyOutlines.com, Inc.

PubMed Search: Post operative granulomas [title]
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Cite this page: Roychowdhury M Postoperative granulomas. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/bladderpostopgran.html. Accessed June 16th, 2019.
Definition / general
Etiology
  • May be due to metals deposited during diathermy, local reaction to tissue necrosis or hypersensitivity reaction (Urology 1990;35:454)
  • Includes “starch” granulomas (Urology 1976;8:507)
Microscopic (histologic) description
  • Palisading histiocytes or giant cells surrounding central necrosis (resembling rheumatoid nodules) or foreign body type granuloma
  • Lesions heal by fibrous scarring
Microscopic (histologic) images

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Postresection

Differential diagnosis
  • Granulomatous cystitis: terms may overlap; often refers to patients with infectious etiology and no distinct mass
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